Stenner Pump 45Mjl5A3S Peristaltic Injector Pump Low Pressure Adjustable - 2.5-50 GPD, 110V, 25 PSI

Precise, Low-Pressure Dosing for Reliable Pool and Spa Chemistry

The Stenner Pump 45MJL5A3S is a low-pressure peristaltic injector pump designed for inline chemical dosing in pool and spa systems. It meters sanitizer, pH adjusters, and other treatment chemicals with continuous, repeatable accuracy, delivering 2.5–50 gallons per day (GPD) while operating on 110V power and supporting up to 25 psi injection pressure. This unit sits in the dosing line as part of a complete pool or spa chemical feed setup, helping you maintain balanced water chemistry with minimal manual intervention.

Construction, Compatibility and Integration

Built on Stenner’s proven peristaltic pump technology, the 45MJL5A3S uses a flexible tubing workflow to meter precise volumes while keeping the chemical pathway isolated from moving parts. The pump is designed for inline installation on the feed line of a pool or spa chemical system and pairs with standard Stenner tubing and fittings commonly used in 45M-series installations. Its 110V power requirement and 25 psi maximum injection pressure align with typical residential and light commercial water-treatment configurations, enabling straightforward integration into existing equipment enclosures or mounting surfaces.

Ideal For

• System compatibility: Inline dosing with standard pool and spa chemical feed setups
• Replacement or maintenance context: Wear items (tubing/seals) require periodic replacement to preserve dosing accuracy
• Performance outcome: Adjustable dosing range (2.5–50 GPD) for precise chemical delivery
• Installation or configuration context: Inline installation on the chemical feed line with 110V power supply

Key Features

• Voltage: 110V operation
• Flow range: 2.5–50 GPD adjustable dosing
• Maximum injection pressure: 25 psi
• Peristaltic pump technology for distortion-free metering
• Corrosion- and chemical-resistant pump housing suitable for pool and spa environments
• Replaceable tubing and wear components for straightforward maintenance

Stenner Pump Company is a trusted name in metering pumps, focusing on durable, easy-to-service peristaltic dosing solutions. Their pumps are widely used in water treatment, pool, and spa applications where reliable, low-maintenance chemical injection is essential for consistent water quality.